[simonh]

These are all good arguments for now, but if climate change progresses as feared at least some of them might become moot. Once sea levels have risen a few metres, say in a century or two, being able to lower the sea level in the Med might be seen as a positive. Changing environmental conditions could change the calculation in favour of plans like these.

[konschubert]

One could then put a hydroelectric power plant between the Atlantic and the Mediterranean Sea - the influx of water through the damn could probably be balanced by evaporation in the Mediterranean Sea... I haven’t done the math on it though.